Geographic information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Reporting Information [Line Items]
Net Revenue	$ 3,408	[1]	$ 623,129	[1]	$ 450,611	[1]	$ 978,083	[1]
PUERTO RICO
Segment Reporting Information [Line Items]
Net Revenue	(80,277)	[1]	551,826	[1]	276,760	[1]	837,640	[1]
UNITED STATES
Segment Reporting Information [Line Items]
Net Revenue	64,992	[1]	50,228	[1]	127,475	[1]	100,451	[1]
Other [Member]
Segment Reporting Information [Line Items]
Net Revenue	$ 18,693	[1]	$ 21,075	[1]	$ 46,376	[1]	$ 39,992	[1]

[1] Total revenues include net interest income (expense), service charges on deposit accounts, other service fees, mortgage banking activities, net gain (loss) and valuation adjustments on investment securities, trading account (loss) profit, net (loss) gain on sale of loans and valuation adjustments on loans held-for-sale, adjustments to indemnity reserves on loans sold, FDIC loss share (expense) income and other operating income. For the quarter ended June 30, 2014, Puerto Rico recorded net interest expense of $119 million, which included the accelerated discount amortization of $414.1 million related to TARP funds.